Wall Street catches its breath after recent rally

Wall Street hovered near record highs on Tuesday as weak oil prices offset gains in healthcare and technology stocks. The S&P 500 and Nasdaq edged up to all-time highs before a decline in oil dulled the gains.[O/R] A rally since late June has left the S&P 500 up nearly 7 percent in 2016, with many investors weighing stretched valuations against expectations for continued low interest rates. "We're probably going to consolidate and then head higher," said John Canally, chief economic stra